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    Video encoding and decoding
    22.
    发明公开
    Video encoding and decoding 失效
    视频编码和解码

    公开(公告)号：EP1725047A3

    公开(公告)日：2009-05-13

    申请号：EP06018032.0

    申请日：1997-10-23

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Sekiguchi, Shunichi ,  Asai, Kohtaro ,  Murakami, Tokumichi ,  Nishikawa, Hirofumi ,  Kuroda, Shinichi ,  Isu, Yosimi ,  Hasegawa, Yuri

    IPC分类号： H04N7/32 ,  H04N7/26

    CPC分类号： H04N19/523 ,  H04N19/53 ,  H04N19/537 ,  H04N19/61

    摘要： It is an object of the invention to obtain a video encoder and a video decoder performing a highly.accurate prediction of a picture, transformed by other than translation, within a short.processing time in a small-scaled circuit. A video encoder for performing compression encoding of an input picture includes motion compensated prediction means for performing interframe motion detection. The motion compensated prediction means has a motion detector including a transformed block matching unit for transforming a reference picture portion into a picture portion having a predefined shape for performing motion detection and a motion compensator including a corresponding pel determinator for determining integer pels of real sample points of the transformed reference picture portion corresponding to an integer pel of the input picture block according to the motion parameters supplied from the motion detector as a result of the comparison so as to supply prediction picture data. The video encoder of the present invention can be combined with a video decoder having a motion compensator which performs the same operations as those in the video encoder to configure a video encoding and decoding system. Further, the video decoder uses half-pels of the reference picture in the motion compensator as well as integer pels, computes pel positions using plural motion vectors, and transforms the obtained pel value into a predefined form by the transformation pattern.

    Image decoding apparatus
    27.
    发明公开
    Image decoding apparatus 失效
    图像解码装置

    公开(公告)号：EP1809045A1

    公开(公告)日：2007-07-18

    申请号：EP07006268.2

    申请日：1997-10-23

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Isu, Yoshimi ,  Sekiguchi, Shunichi ,  Asai, Kohtaro ,  Nishikawa, Hirofumi ,  Kuroda, Shinichi ,  Hasegawa, Yuri

    IPC分类号： H04N7/44 ,  H04N7/24 ,  H04N7/26 ,  H04N7/50

    CPC分类号： H04N21/4385 ,  H04N19/00 ,  H04N19/12 ,  H04N19/136 ,  H04N19/20 ,  H04N19/40 ,  H04N19/44 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/61 ,  H04N19/70 ,  H04N21/234318 ,  H04N21/2389 ,  H04N21/44012 ,  H04N21/440218

    摘要： An image decoding apparatus for decoding at least a first coded bit stream into which header information of the H.263 coding scheme and image coded data encoded in the H.263 coding scheme are multiplexed, or for decoding a second coded bit stream into which header information of the MPEG-4 coding scheme and image coded data encoded in the MPEG-4 coding scheme are multiplexed, comprises a switch (102) for switching a decoding analysis scheme of decoding a direct current component of an intra-coded DCT coefficient according to the received first coded bit stream and the received second coded bit stream, wherein when the first coded bit stream is received, the switch decodes the direct current component of the intra-coded DCT coefficient by a predetermined fixed code length.

    摘要翻译： 一种图像解码装置，至少对第一编码比特流进行解码，在该第一编码比特流中复用H.263编码方案的头部信息和用H.263编码方案编码的图像编码数据，或者对第二编码比特流进行解码， MPEG-4编码方式的信息和以MPEG-4编码方式编码的图像编码数据被多路复用，包括：开关（102），用于切换解码分析方案，该解码分析方案根据以下内容解码帧内编码DCT系数的直流分量： 所接收的第一编码比特流和所接收的第二编码比特流，其中当接收到第一编码比特流时，开关将帧内编码DCT系数的直流分量解码预定的固定码长。

    Image decoding apparatus
    28.
    发明公开
    Image decoding apparatus 失效
    图像解码装置

    公开(公告)号：EP1809039A1

    公开(公告)日：2007-07-18

    申请号：EP07008215.1

    申请日：1997-10-23

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Isu, Yoshimi ,  Sekiguchi, Shunichi ,  Asai, Kohtaro ,  Nishikawa, Hirofumi ,  Kuroda, Shinichi ,  Hasegawa, Yuri

    IPC分类号： H04N7/24 ,  H04N7/26

    CPC分类号： H04N21/4385 ,  H04N19/00 ,  H04N19/12 ,  H04N19/136 ,  H04N19/20 ,  H04N19/40 ,  H04N19/44 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/61 ,  H04N19/70 ,  H04N21/234318 ,  H04N21/2389 ,  H04N21/44012 ,  H04N21/440218

    摘要： An image decoding apparatus for decoding at least a first coded bit stream (203) into which header information of the 11.263 coding scheme and image coded data encoded in the 11.263 coding scheme are multiplexed, or for decoding a second coded bit stream (204) into which header information of the MPEG-4 coding scheme and image coded data encoded in the MPEG-4 coding scheme are multiplexed,
    the image decoding apparatus comprising:
    a coding scheme decision means (32) for making a decision as to whether a received coded bit stream is the first coded bit stream or the second coded bit stream in response to the first header information or to the second header information;
    a setter (43) for setting image coding information to be used for decoding the received first coded bit stream (203) according to a syntax of the second coded bit stream (204) to be fixed value; and
    a decoder (10) for decoding image coding information included in the header information of the MPEG-4 coding scheme from the received second coded bit stream (204),
    wherein when the first coded bit stream (203) is received, the received first coded bit stream (203) is decoded according to the syntax of the second coded bit stream (204) based on the image coding information set by the setter (43), and when the second coded bit stream (204) is received, the received second coded bit stream (204) is decoded according to the image coding information decoded by the decoder (10),
    wherein the image coding information includes VOL geometry information set to a rectangle shape by the setter (43).

    摘要翻译： 一种图像解码装置，至少对第一编码比特流（203）进行解码，其中将11.263编码方案的头部信息和11.263编码方案中编码的图像编码数据复用到其中，或者将第二编码比特流（204）解码为 该MPEG-4编码方式的头部信息和以MPEG-4编码方式编码的图像编码数据被多路复用，该图像解码装置包括：编码方式决定单元（32），用于判断接收到的编码位 流是响应于第一报头信息或第二报头信息的第一编码比特流或第二编码比特流; 设置者（43），用于根据第二编码比特流（204）的语法将用于解码接收的第一编码比特流（203）的图像编码信息设置为固定值; 和解码器（10），用于从接收的第二编码比特流（204）解码包括在MPEG-4编码方案的头部信息中的图像编码信息，其中当接收到第一编码比特流（203）时，接收到的第一 基于由设置者（43）设置的图像编码信息，根据第二编码比特流（204）的语法对已编码比特流（203）进行解码，并且当接收到第二编码比特流（204）时，接收 根据由解码器（10）解码的图像编码信息对第二编码比特流（204）进行解码，其中图像编码信息包括由设置器（43）设置为矩形形状的VOL几何信息。

    Image decoding apparatus
    29.
    发明公开
    Image decoding apparatus 失效
    图像解码装置

    公开(公告)号：EP1809037A1

    公开(公告)日：2007-07-18

    申请号：EP07008213.6

    申请日：1997-10-23

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Isu, Yoshimi ,  Sekiguchi, Shunichi ,  Asai, Kohtaro ,  Nishikawa, Hirofumi ,  Kuroda, Shinichi ,  Hasegawa, Yuri

    IPC分类号： H04N7/24 ,  H04N7/26

    CPC分类号： H04N21/4385 ,  H04N19/00 ,  H04N19/12 ,  H04N19/136 ,  H04N19/20 ,  H04N19/40 ,  H04N19/44 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/61 ,  H04N19/70 ,  H04N21/234318 ,  H04N21/2389 ,  H04N21/44012 ,  H04N21/440218

    摘要： An image decoding apparatus for decoding at least a first coded bit stream (203) into which header information of the H.263 coding scheme and image coded data encoded in the H.263 coding scheme are multiplexed, or for decoding a second coded bit stream (204) into which header information of the MPEG-4 coding scheme and image coded data encoded in the MPEG-4 coding scheme are multiplexed,
    the image decoding apparatus comprising:
    a coding scheme decision means (32) for making a decision as to whether a received coded bit stream is the first coded bit stream or the second coded bit stream in response to the first header information or to the second header information;
    a setter (43) for setting image coding information to be used for decoding the received first coded bit stream (203) according to a syntax of the second coded bit stream (204) to be fixed value; and
    a decoder (10) for decoding image coding information included in the header information of the MPEG-4 coding scheme from the received second coded bit stream (204),
    wherein when the first coded bit stream (203) is received, the received first coded bit stream (203) is decoded according to the syntax of the second coded bit stream (204) based on the image coding information set by the setter (43), and when the second coded bit stream (204) is received, the received second coded bit stream (204) is decoded according to the image coding information decoded by the decoder (10),
    wherein the image coding information includes motion vector searching range designation information set to a value of a motion vector searching range of the H.263 coding scheme by the setter (43).

    摘要翻译： 一种图像解码装置，至少将第一编码比特流（203）解码，其中H.263编码方案的头部信息和用H.263编码方案编码的图像编码数据被复用到该第一编码比特流中，或者用于解码第二编码比特流 （204），其中MPEG-4编码方案的头部信息和以MPEG-4编码方案编码的图像编码数据被多路复用，该图像解码设备包括：编码方案确定装置（32），用于作出关于是否 响应于第一报头信息或第二报头信息，接收到的编码比特流是第一编码比特流或第二编码比特流; 设置者（43），用于根据第二编码比特流（204）的语法将用于解码接收的第一编码比特流（203）的图像编码信息设置为固定值; 和解码器（10），用于从接收的第二编码比特流（204）解码包括在MPEG-4编码方案的头部信息中的图像编码信息，其中当接收到第一编码比特流（203）时，接收到的第一 基于由设置者（43）设置的图像编码信息，根据第二编码比特流（204）的语法对已编码比特流（203）进行解码，并且当接收到第二编码比特流（204）时，接收 根据由解码器（10）解码的图像编码信息对第二编码比特流（204）进行解码，其中图像编码信息包括设置为H.263的运动矢量搜索范围的值的运动矢量搜索范围指定信息 编码器的编码方案（43）。